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Updated: Jul 31, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
Published on: February 9, 2021
[A silica urinary calculus secondary to the absorption of gelopectose in a child]
M Augusti1, J C Mikaelian, H Monsaint
1Hôpital Necker-Enfants Malades, Clinique Urologique, Paris.
Abstract:
The authors report a case of silica-containing urinary stones in a child. This drug-induced urinary stone was secondary to absorption of Gelopectose and its composition was confirmed by infrared spectrophotometry. Other cases have been diagnosed but have not yet been published. Patients with such urinary stones should be investigated for possible hypercalciuria or a disorder of H+ metabolism in the context of distal tubular acidosis, which may be incomplete and/or transient.
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